concavo-convex (adjective)

1. The concavo-convex shape of this dress creates a unique silhouette on the runway.

2. In the science fiction novel, the alien spaceship had a concavo-convex design, unlike any other spacecraft.

3. The architect incorporated concavo-convex windows in the building's design to enhance natural lighting.

4. The artist used concavo-convex canvases to create depth and dimension in their paintings.